The federal Centers for Disease Control and Prevention today confirmed nine cases of swine flu in Washington state. That includes seven cases in King County and one each in Snohomish and Spokane counties, according to Washington Secretary of Health Mary Selecky.

The CDC has determined that the swine flu virus H1N1 is contagious and is spreading from human to human. Symptoms of swine flu include a fever of more than 100°F, coughing, joint aches, severe headache and, in some cases, vomiting and diarrhea.